• There were many reasons for the change of the site software, the biggest was security. The age of the old software also meant no server updates for certain programs. There are many benefits to the new software, one of the biggest is the mobile functionality. Ill fix up some stuff in the coming days, we'll also try to get some of the old addons back or the data imported back into the site like the garage. To create a thread or to reply with a post is basically the same as it was in the prior software. The default style of the site is light colored, but i temporarily added a darker colored style, to change you can find a link at the bottom of the site.

U0128

I copied and pasted from my manual. see below.



U0128 TCM BOSCH Lost communication with WPM/EPB (lost of CAN ID’s) Missing CAN ID 460h from WPM/EPB. Module internal error. Damaged circuit wires or damaged module pins. Check for TCM fault or WPM/EPB fault. With unit connected to BUDS with MPI2, Turn ignition switch OFF, wait for cluster to turn off. Disconnect MPI2 from DLC connector. Measure resistance between DLC-1 and DLC-2 (expected value = 50 to 70 ohms). Measure resistance between DLC-1 and TCMB-C1 (expected value < 2 ohms). Measure resistance between DLC-2 and TCMB-C2 (expected value < 2 ohms). Measure resistance between DLC-1 and WPM-6 (expected value < 2 ohms). Measure resistance between DLC-2 and WPM-8 (expected value < 2 ohms). Turn ignition switch ON Measure voltage between harness connector WPM-5 and ground (expected value = 11 to 13 volts
 
OverHillAndDale said:
That was phone typing for "stuttered"! No, the windscreen won't budge and the is no indication that the motor is even trying to run.


Sent from my iPhone using Tapatalk
Click to expand...

If the windscreen and parking brake share a common circuit, and neither works, then the likelihood is a failure at the power source.

What is the year and model of the machine. I thought 14 RTs but not sure. If possible I can research the wiring diagram.
 
PMK said:
If the windscreen and parking brake share a common circuit, and neither works, then the likelihood is a failure at the power source.

What is the year and model of the machine. I thought 14 RTs but not sure. If possible I can research the wiring diagram.
Click to expand...

Thanks, I REALLY appreciate that. It is a 14 RT limited.

I wondered if I inadvertently had burned up a relay but I don't know which one. The fuse is good but I don't know what other components the circuit goes through to feed the parking brake and windshield.
 
OverHillAndDale said:
Thanks, I REALLY appreciate that. It is a 14 RT limited.

I wondered if I inadvertently had burned up a relay but I don't know which one. The fuse is good but I don't know what other components the circuit goes through to feed the parking brake and windshield.
Click to expand...

Let me check the diagram
 
I assume, but need to verify, does the instrument cluster power up and illuminate the electronic speedo and more
 
PMK said:
I assume, but need to verify, does the instrument cluster power up and illuminate the electronic speedo and more
Click to expand...

Yes, everything powers up as expected, all lights and instruement panel seem to be working. Everything but the parking brake and the windshield.
 
OverHillAndDale said:
Yes, everything powers up as expected, all lights and instruement panel seem to be working. Everything but the parking brake and the windshield.
Click to expand...

As a best guess, the one common item appears to be a fuse. Left Fuse Box, titled WPM should be F4 and 20 amps. Even if it appears good, try another new fuse.

There is a relay in the system, however it also operates other items such as the instrument cluster. This fuse I mention appears to be dedicated high power to the windscreen and parking brake only, but it is more complicated since the lower power control are on another fused circuit.

Check that F4 fuse and replace it, then report back.
 
That fuse is the common high amp power for both the windscreen and parking brake.

There is a module for both systems. You state you have the instrument cluster lit up, therefore there should be power to the parking brake switch.

If the fuse does not correct the problem, other possible causes. Is the connector for the parking brake switch fully seated and not broken? Is the connector for the parking brake / windscreen motor module connected and connected properly?

In regards to failures, if you did not accidentally cut a wrong wire, the parking brake module / windscreen module may have failed, or more likely, the parking brake switch may have failed, however I am unsure if that would prevent windscreen movement but may.
 
The F4 fuse 20 amp is fed via the main relay. With other items operating, the relay appears to not be an issue. It is the fuse or downstream of the fuse.

Since it does tie into the CAN bus, you may also try leaving the key removed for a bit. Maybe Billy Bovine will offer advice regarding if the CAN Bus can clear if the battery is disconnected for a bit.
 
Did you unplug the parking brake switch when installing the usb charging plug? Did you unplug them all? Did you plug the correct connector back onto right switch? Even if you did not. It may have come part way off because you where working in that area. Give that connector a good inspection.
 
Took out the key and waiting, replaced the fuse with a new one, no change. I also verified that the parking brake switch is receiving power on backlight AND brake switch, and is switching that power.

Found a very old post where a failed circuit on the windshield control had effects similar to this, so I'm looking there next.
 
parking brake will not release

Hi
I have been a member for about 6 months, but have not posted. Several months ago I had my 2016

rt Limited in to have the garmin 590 GPS checked.

At that rime I called back to Ride now to see if it was ready.. The break had locked up in the shop.. they tried many things to release it and got it to release. On Calling Garmin they were told to replace the whole brake system in the back Free. The replacement worked fine If you get intouch with the shop they mih=ght be able to help you


My phone will not work on the bike It I can not hear what the other person, but they can hear me.

Uncle Al;
 
You must log in or register to reply here.

Similar threads

Cloak
DESS error may be due to all the aftermarket electronic add-ons? Just throwing it out there!
Replies
5
Views
153
Deanna777
Deanna777
amusher
Got Limp & Codes U0073, U0122, U0100, C0060, P0556, P0504, U0101, U0128, U0295, U0303
2 3
Replies
41
Views
5K
Little Blue
Little Blue
T
Unable to switch USB outlets in Rear Trunk to always on 2022 RT S2S
Replies
7
Views
1K
TroubledJuan
T
S
2013 Spyder RT-S with faded switches - do I just need new switches?
Replies
7
Views
1K
SASpyder
S
Ages
Can the USB 2.0 port on my 2024 S2S be Upgraded to USB 3.0 and higher?
Replies
9
Views
397
RogerC60
R
Back
Top